To investigate the effect of OGT expression inhibited by RNAi on the alteration of tau phosphorylation and glycosylation level in HEK293T cells.The siRNAs targeting OGTgene(OGT-siRNA1～3) were designed and chemically synthesized.The OGT-siRNA1～3 were transfected into HEK293T cells via lipofectamine2000.The efficacy of RNA interference was detected by RT-PCR.The fluorescence of GFP/OGT was counted by fluorescence microscopy after pEGFP/OGT and OGT-siRNA1～3 cotransfected to HEK293T cells for 24 h.The level of tau phosphorylation and glycosylation were detected by Western blot after Plasmid pCI/tau441 and the siRNA cotransfected HEK293T cells for 48 h.OGT-siRNA3(100 nmol/L) could effectively downregulate the expression of OGT gene compared with Mock group(80.0% at mRNA level and 51.3% at protein level).The level of phosphorylation at various sites of the tau was significantly upregulated and the glycosylation was downregulated following the inhibition of OGT gene expression.There is an apparent negative correlation between the modification of phosphorylation and glycosylation of tau protein, the deficient in glucose uptaken/metabolism may be an important pathogenesis of AD.

Objective: To investigate correlations between motor skills with focused and shifting attention among preschool children, and to provide basis for the overall development of preschool children aged 4-6 years. Methods: During March to June 2020, a total of 165 preschool children aged 4-6 years were selected and investigated with subscales of the Bruininks Oseretsky Test of Motor Proficiency 2nd Edition (BOT-2) for agility and limb bilateral coordination assessment, and subscales of the Movement Assessment Battery for Children test 2nd Edition (MABC-2) for throwing and catching skill assessment, as well as balance subscale for the assessment of limb movement coordination, hand eye coordination, agility, and balance. The Kansas Reflection Impulsivity Scale for Preschoolers for Pre schoolers (KRISP) and Dimensional Change Card Sort (DCCS) were used to assess focused and shifting attention levels. Correlation and linear regression analyses were performed for statistical analysis. Results: Except for one handed throwing skills and shifting attention, there were statistically significant gender differences between boys and girls in total score of body movement coordination, total score of hand to eye coordination, hand to hand connection, total score of agility of movement, total score of movement balance, static support, walking on tiptoe, foot to foot jump and focused attention( t =-6.86, -2.00 ,-3.15,-3.75,-3.00,-2.95,-2.18,-2.11,-3.21, P ＜0.05), and girls were better than boys; children s total score of body movement coordination, total score of hand to eye coordination, hand to hand connection, agility of movement, walking on tiptoe and focused attention improves with age( r =0.47,0.41,0.47,0.51,0.16,0.31, P ＜0.05); After excluding the interference of gender and age, total score of body movement coordination was significantly correlated with preschool children s focused attention( β=0.31,95%CI =0.08-0.39, P ＜0.01). Conclusion Limb movement coordination and focused attention are significantly and positively correlated among preschool children aged 4-6 years. Therefore, preschool education and family activities should focus on designing and developing limb movement coordination related games and courses to enhance the focused attention of and form favorable attention quality in preschool children aged 4-6 years.

【Objective】 To assess the prevalence and treatment of high cardiovascular disease （CVD） risk， and identify individual characteristics related to high CVD risk. 【Methods】 Based on the data of the China Patient-Centered Evaluative Assessment of Cardiac Events （PEACE） Million Persons Project （MPP） from 2016 to 2019， this study enrolled local residents aged 35 to 75 years from 39 counties or districts in Northwest China. Rates of high CVD risk and individual characteristics were assessed in the overall study population. Statin and aspirin use was also evaluated among those at high risk for CVD. Multivariable mixed models were fitted to evaluate the relationship between individual characteristics and high CVD risk. 【Results】 Among 364 537 participants， the average age was （54.6±9.7）years， and 5.8% was at a high risk for CVD. Multivariate mixed models showed that individuals who were currently using alcohol， overweight or obese tended to have a high risk for CVD， while married persons， those with a higher education level or a higher household income were correlated with a lower risk for CVD （all P<0.05）. Among high-risk persons， hypertension was the most prevalent risk factor （98.1%）， and only 1.3% and 3.5% reported their use of statins and aspirin， respectively. 【Conclusion】 Of the 364 537 participants， about 1 in 17 had a high risk for CVD. Among those at a high CVD risk， only less than 4% reported taking statins or aspirin. These findings indicate that there is still much room for risk mitigation in this population in China.